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Periodic Table
Revision for Year 8 Test
Question | Answer |
---|---|
What does the Periodic table show? | All the elements arranged in rows and columns. |
What are physical properties of a substance? | These are features that can be observed without changing a substance. |
What are chemical properties of a substance? | These are features of the way a substance reacts with other substances. |
What are groups in the periodic table? | These are columns on the table. |
What are periods on the periodic table? | These are the rows. |
What are elements? | These consist of only one type of atom. |
What are molecules? | Atoms of an element joined together. |
What are compounds? | These are two or more different elements joined together by a chemical bond. |
What are mixtures? | These are molecules that are not chemically joined together. |
Who created the Periodic Table? | Dimitri Mendeleev |
What elements are found in Group 1? | The alkali metals. |
Do they get more reactive as you go up the group or down the group? | Down the group. |
Do the halogens become more reactive as they go up or down the group? | Up the group. |
What happens if you add bromine to sodium iodide? | The bromide replaces the iodine so it becomes sodium bromide. |